Corrected entry: Other than the sleeper, the only two people that know about the bomb are Hassan and Jaffa, with the hijacking of the plane being used as a smokescreen to allow Hassan to blow the bomb up over Washington D.C. We know that Hassan and Jaffa set the plan up for Jaffa to get captured so Hassan could hijack the plane. When you think about it none of this makes sense. If Hassan was going to detonate a nerve gas bomb over America and kill millions of people anyway there was no need to get Jaffa captured at all, just hijack the plane and carry out the bombing.
Corrected entry: When Oceanic Flight 343 finally touches down at the smaller airfield and Grant is slowing it down you can see him pull the throttles to idle then pull the reverse levers back. On a real 747 this would deploy the reverse "cans" which basically means the back part of the engine covers move towards the back of the engine to direct a good proportion of the thrust forward to slow the aircraft. During the next few shots we go from inside the cockpit with Grant wrestling with the controls, to outside the aircraft, where we see the engines go past the camera several times, wrecking the strips lights and light planes. In all of these shots the "cans" are still in the non-reverse position.
Corrected entry: In the cargo hold of any jetliner, the engine noise would be quite loud, yet the commando team is able to converse in normal tones of voice and there is no engine noise at all. In fact, there is virtually no engine noise at all on any inside part of the jet.
Corrected entry: In the scene when the soldiers sneak into the plane, they go through heavy turbulence. With the whole plane shaking, the main terrorist decides to go into the cockpit. On his way up he picks up an Uzi from a trolley or something. The point is that the weapon was just lying there, in perfect reach for passengers and flight attendants. Not very professional to let your guns lie around.
Corrected entry: In the scene where the terrorist blows himself up in the London restaurant, it is night there. This scene is shown shortly after the planes depature from a daylighted Athens. It is impossible for it to be night in London and late afternoon in Athens.
Corrected entry: During the final landing approach to Dulles, Virginia and subsequently go around, the aircraft was suddenly nearby to Frederick, Maryland. Why would the protagonist choose to land at FDK with a 5,000-foot runway instead of circling around again to Dulles with a 10,000-foot runway. Certainly the flight time of a circling, second approach to Dulles would be less than that to fly to FDK.
Corrected entry: At the end of the movie, why in the world is the back door open, yet no emergency chute shown? Surely, after that sort of landing, they would have used normal emergency procedures?
Corrected entry: When Hassan kills the pilots at the end, he sweeps his machine gun in an arc through the back wall of the cockpit. When the dead pilots are shown, one has a circular cluster of four bullet holes in his back.